Lottie Tester vs Hardcore Focus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lottie Tester
Easily test Lottie animations directly on your device. Open JSON files to play, pause, and verify animations, checking for artifacts and glitches. Adjust background color and scale to ensure proper rendering.
- Open Lottie JSON files
- Play and pause animations
- Change background color
- Scale animation axes
- Verify animation rendering
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Got a Lottie JSON file and want to verify it's working on a device? Open and play it directly in this app to validate it's working as expected. Sometimes when exporting a Lottie file it might contain artifacts and glitches. To verify the export has worked properly, just play it with the Lottie Tester. - Open Lottie JSON files - Play and pause the animation - Change the background color to verify the Lottie's transparent background - Shrink the X or Y axis to scale the animation and see how it reacts - Uses Lottie v4.5.0
Hardcore Focus
This app encourages focused work by having users commit to a single, meaningful task for a two-hour period. It blocks distractions and tracks your focus sessions, helping you accomplish real work instead of just managing tasks.
- Single daily task focus
- 2-hour deep work timer
- Distracting app blocking
- Distraction tracking
- Progress logging
- Streaks and achievements
- Widgets and Live Activities
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Hardcore Focus blocks distracting apps with Screen Time, then runs a focus session toward a daily goal. Habits next to it. No account. No VPN. Three things: Focus, Habits, and Shield. No to-do list. No calendar. SHIELD — BLOCK THE NOISE Block the apps that steal your day with Apple’s native Screen Time API. On a schedule, during a focus session, or always on. You choose how hard it is to get back in: • No Bypass — locked is locked • 15-Minute Bypass — one short, deliberate exception FOCUS — DO DEEP WORK One button. Tap it and work until you’re done — no countdown, no 25-minute cycle. Keep the screen awake. Optional Apple Music focus playlist. Watch your daily focus goal fill up on the ring. Pause when life happens. Live Activity and Dynamic Island keep the timer visible. HABITS — FILL THE TIME YOU GET BACK Stack habits into routines by time of day. Check them off, count reps, or run a timed habit. Workouts, walks, and mindful minutes can auto-complete from Apple Health. Keep the streak on the habits that matter. ALSO • Apple Watch — start sessions and complete habits from your wrist • Siri & Shortcuts • Widgets, Live Activities & Dynamic Island • On-device insights into your focus patterns (on your phone) • Apple Music focus playlists inside the session • iCloud sync across iPhone, iPad & Apple Watch — no Hardcore Focus account PRIVATE BY DESIGN Zero data collection. Anything you sync stays in your own iCloud. WHO IT’S FOR People who already know which apps steal the day and keep opening them anyway. Block, focus, show up for the habits. WHO IT’S NOT FOR SUBSCRIPTION Hardcore Focus requires a subscription. Annual includes a 7-day free trial. Then Weekly ($3.99), Monthly ($8.99), or Annual ($49.99). Payment is charged to your Apple Account. Subscriptions renew automatically unless canceled at least 24 hours before the period ends. Manage or cancel anytime in Settings → Subscriptions. Terms: https://www.hardcorefocus.com/terms Privacy: https://www.hardcorefocus.com/privacy Support: https://www.hardcorefocus.com
Screenshots
Verdict
The clearest difference is in-app purchases: Lottie Tester at none against Hardcore Focus's 3. Lottie Tester also leads on iOS requirement (17.5 vs 26.0). Hardcore Focus's advantage is ratings volume (12 vs 1). On price, rating, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Hardcore Focus sells 3 in-app purchases, starting at $3.99 per 7 days. Lottie Tester asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Lottie Tester against 5.0 for Hardcore Focus. That said, the two scores are not equally well evidenced: Hardcore Focus has 12 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | Lottie Tester | Hardcore Focus |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (12 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 12 — better |
| Update frequency | — | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.5 — better | 26.0 |
| Further details — not scored | ||
| Size | 3 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Sven Korset | Eric Kuhn |
Customer experience
Lottie Tester
Hardcore Focus
In-app purchases
Lottie Tester
No in-app purchases
Hardcore Focus
- Hardcore Focus Weekly$3.997 Days
- Hardcore Focus Pro Monthly$8.991 Month
- Hardcore Focus Pro Annual$49.991 Year








